Call Setup and Call Handling in GSM

Call Setup and Call Handling in GSM

By adinherbal at 18.37

Call Setup Different procedures are necessary depending on the initiating and terminating party: Mobile Originating Call MOC: Call setup, ...

3G Security Principles 1

3G Security Principles 1

By adinherbal at 02.32

  It was agreed that any new security architecture must be based on an evolution of GSM and must adopt four basic principles:   It will tak...

Call Number Identification in GSM

Call Number Identification in GSM

By adinherbal at 03.40

    If an adversary knows certain information (IMSI, IMEI, MSISDN) about the subscriber or a mobile phone, he can then identify individual ...

Authentication in GSM

Authentication in GSM

By adinherbal at 03.35

     The SIM card can be protected against unauthorised access with a four- to eight-digit P ersonal I dentification N umber ( PIN ). After...

Frequency Concepts in GSM

Frequency Concepts in GSM

By adinherbal at 09.52

      An MS communicates with a BTS by transmitting or receiving radio waves, which consist of electromagnetic energy. The frequency of a ra...